A year after the events of Power Rangers In Space, the Galactic Space Alliance has launched the space colony Terra Venture in search of a new world to colonize for Earth's people. Across the cosmos, the evil forces of Scorpius have invaded the planet Mirinoi to steal a set of legendary relics called the Quasar Sabers that sit in a stone altar. When a young native of the planet named Maya runs through a dimensional portal to find help, she appears in front of Terra Venture workers Kendrix Morgan, Kai Chen, and Mike Corbett, who are currently dealing with Mike's little brother Leo as he tries to smuggle his way onto the colony. Kai refuses to follow as the rest of his group return with Maya to Mirinoi, but is unable to ignore the situation for long and employs the Astro Megaship and its care